cluster

Definitions

vclustergather or cause to gather into a cluster"She bunched her fingers into a fist"

vclustercome together as in a cluster or flock"The poets constellate in this town every summer"

nclustera grouping of a number of similar things"a bunch of trees","a cluster of admirers"

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Webster's Revised Unabridged Dictionary

Interesting fact:
It is said that grapefruit got its name because it grows like grapes in clusters. One cluster can have up to 25 grapefruits

ClusterA number of individuals grouped together or collected in one place; a crowd; a mob."As bees . . . Pour forth their populous youth about the hive
In clusters .""We loved him; but, like beasts
And cowardly nobles, gave way unto your clusters ,
Who did hoot him out o' the city."

ClusterA number of similar things collected together or lying contiguous; a group; as, a cluster of islands."Cluster of provinces."

ClusterA number of things of the same kind growing together; a bunch."Her deeds were like great clusters of ripe grapes,
Which load the bunches of the fruitful vine."

v. tClusterTo collect into a cluster or clusters; to gather into a bunch or close body."Not less the bee would range her cells, . . . The foxglove cluster dappled bells.""Or from the forest falls the clustered snow."

v. iClusterTo grow in clusters or assemble in groups; to gather or unite in a cluster or clusters."His sunny hair Cluster'd about his temples, like a god's.""The princes of the country clustering together."

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Century Dictionary and Cyclopedia

nclusterA number of things, as fruits, growing naturally together; a bunch, particularly ot grapes or other fruit growing similarly.

nclusterA number of persons or things of any kind collected or gathered into a close body; a nearly conjoined group or collection: as, a cluster of islands.

clusterTo form or constitute a cluster or clusters; grow or be placed in clusters or groups; gather in a group or groups.

clusterTo collect into a cluster or group.

clusterTo produce in a cluster or clusters.

clusterTo cover with clusters.

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Chambers's Twentieth Century Dictionary

nClusterklus′tėr a number of things of the same kind growing or joined together: a bunch: a mass: a crowd

v.iClusterto grow or gather into clusters

v.tClusterto collect into clusters; to cover with clusters

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Quotations

Ezra Pound

“The Image is more than an idea. It is a vortex or cluster of fused ideas and is endowed with energy.”

In science:

This factor is, in principle, a random quantity that differs from one cluster to another; however, this number is expected to be roughly the same for all clusters that contribute to the spectral sum at low frequencies due to averaging, since such clusters are all large, and in some sense similar.

There are essentially two factors which determine how much gas is present in a globular cluster at the current epoch: (i) the mass and central escape speed of the cluster, and (ii) the orbit of the cluster and its current position and velocity.

For the more distant clusters some of the typical tools are the speciﬁc globular cluster frequency, the cluster luminosity function, and color-color diagrams.

The Formation of Star Clusters

Ground based observations, such as those of Lutz (1991), were inconclusive, since they were not able to resolve the clusters to determine whether they were associations or HII regions, with Reff ≈ 100 pc, or compact clusters similar to the globular clusters in the Milky Way, with Reff ≈ 3 pc (van den Bergh, 1996).

The Formation of Star Clusters

Looking at resolved clusters, Kennicutt and Chu (1988) concluded “that populous clusters may be forming in giant HII regions, but only a small fraction of giant HII regions are likely to contains such clusters”.

The Formation of Star Clusters

What fraction of stars are formed in clusters? Since only a subsample of the young clusters are likely to survive, an obvious question is whether most of the ﬁeld stars in a galaxy are originally formed in clusters.

The Formation of Star Clusters

We use this same galaxy core at the centers of poor cluster and cluster calculations with an additional extended stellar component approximated with a King distribution; the gravity produced by these extended cluster stars has almost no inﬂuence on the gas dynamics.

Entropy Evolution in Galaxy Groups and Clusters; A Comparison of External and Internal Heating

Results in each panel are shown with clusters of open circles for groups, poor clusters and clusters, respectively from left to right.

Entropy Evolution in Galaxy Groups and Clusters; A Comparison of External and Internal Heating

The aim is to assign a cluster label to each site so that at the end of scanning we have sites having the same label belonging to a cluster; we shall have different clusters having distinct cluster labels.

An Introduction to Monte Carlo Simulation of Statistical physics Problem

We give the lower cluster label (L = 1) to the coalesced cluster, store in the array LL(L) the size of the coalesced cluster and declare the cluster label 3 as improper by setting LL(3) = −1.

An Introduction to Monte Carlo Simulation of Statistical physics Problem

How does clustering on large-scales evolve? Cluster surveys are now reaching volumes and depths that enable detection of several hundred clusters with z > 0.6.

Multi-wavelength Surveys for Distant Clusters

Fig. 1 depicts the correlation dimension for a sample that ends up in 2.5 minutes before the cluster, a sample that contains the cluster, and a sample that begins in 23 minutes after the cluster.

Nonlinear analysis of EAS clusters

The main advantage is that Frenkel clusters do not have the pathology of the Mayer clusters: the cluster size distribution (10) is positive whatever the temperature and density.

Clusters in Simple Fluids

We recall that in random percolation theory, the size of the largest cluster, the mean cluster size, the connectedness length, and the cluster size distribution are respectively described at the percolation threshold by the following critical exponents βp , γp , νp , σp and τp .

Clusters in Simple Fluids

Remember that Coniglio-Klein clusters, as well as Swendsen-Wang clusters, do not form a perfect gas of clusters.